var base64Str = process.argv[2];
var utfStr = Buffer.from(base64Str,"base64");
var endStr = utfStr.toString("utf-8");
// console.log(endStr);
var spt = endStr.split(":");
var sbj = {'usename: ': spt[0],'psw: ': spt[1]}
console.log(sbj);
// console.log(spt[0]);
// console.log(spt[1]);